commit ce10842036320b5cc1b4f7057662fb3ef2d1ea10
author David Majnemer <david.majnemer@gmail.com> Tue Jan 19 23:05:27 2016 +0000
committer David Majnemer <david.majnemer@gmail.com> Tue Jan 19 23:05:27 2016 +0000
tree 078b977af6dd739cf156b86afb9bc05a2c0a2072
parent 4b919b2ab3e7cc46c9228e277371dc7f0580f9fd

[MC, COFF] Add .reloc support for WinCOFF

This adds rudimentary support for a few relocations that we will use for
the CodeView debug format.

llvm-svn: 258216

llvm/lib/Target/X86/MCTargetDesc/X86AsmBackend.cpp

diff --git a/llvm/lib/Target/X86/MCTargetDesc/X86AsmBackend.cpp b/llvm/lib/Target/X86/MCTargetDesc/X86AsmBackend.cpp
index 133bd0e..19cf1fe 100644
--- a/llvm/lib/Target/X86/MCTargetDesc/X86AsmBackend.cpp
+++ b/llvm/lib/Target/X86/MCTargetDesc/X86AsmBackend.cpp
@@ -90,10 +90,11 @@
 
   const MCFixupKindInfo &getFixupKindInfo(MCFixupKind Kind) const override {
     const static MCFixupKindInfo Infos[X86::NumTargetFixupKinds] = {
-      { "reloc_riprel_4byte", 0, 4 * 8, MCFixupKindInfo::FKF_IsPCRel },
-      { "reloc_riprel_4byte_movq_load", 0, 4 * 8, MCFixupKindInfo::FKF_IsPCRel},
+      { "reloc_riprel_4byte", 0, 4 * 8, MCFixupKindInfo::FKF_IsPCRel, },
+      { "reloc_riprel_4byte_movq_load", 0, 4 * 8, MCFixupKindInfo::FKF_IsPCRel,},
       { "reloc_signed_4byte", 0, 4 * 8, 0},
-      { "reloc_global_offset_table", 0, 4 * 8, 0}
+      { "reloc_global_offset_table", 0, 4 * 8, 0},
+      { "reloc_global_offset_table8", 0, 8 * 8, 0},
     };
 
     if (Kind < FirstTargetFixupKind)
@@ -423,6 +424,14 @@
     , Is64Bit(is64Bit) {
   }
 
+  Optional<MCFixupKind> getFixupKind(StringRef Name) const override {
+    return StringSwitch<Optional<MCFixupKind>>(Name)
+        .Case("dir32", FK_Data_4)
+        .Case("secrel32", FK_SecRel_4)
+        .Case("secidx", FK_SecRel_2)
+        .Default(MCAsmBackend::getFixupKind(Name));
+  }
+
   MCObjectWriter *createObjectWriter(raw_pwrite_stream &OS) const override {
     return createX86WinCOFFObjectWriter(OS, Is64Bit);
   }
@@ -821,7 +830,7 @@
   if (TheTriple.isOSBinFormatMachO())
     return new DarwinX86_32AsmBackend(T, MRI, CPU);
 
-  if (TheTriple.isOSWindows() && !TheTriple.isOSBinFormatELF())
+  if (TheTriple.isOSWindows() && TheTriple.isOSBinFormatCOFF())
     return new WindowsX86AsmBackend(T, false, CPU);
 
   uint8_t OSABI = MCELFObjectTargetWriter::getOSABI(TheTriple.getOS());
@@ -844,7 +853,7 @@
     return new DarwinX86_64AsmBackend(T, MRI, CPU, CS);
   }
 
-  if (TheTriple.isOSWindows() && !TheTriple.isOSBinFormatELF())
+  if (TheTriple.isOSWindows() && TheTriple.isOSBinFormatCOFF())
     return new WindowsX86AsmBackend(T, true, CPU);
 
   uint8_t OSABI = MCELFObjectTargetWriter::getOSABI(TheTriple.getOS());